H
Technology

Advanced Coating for Harsh Optical Environments

Multi-layer thin film technology that simultaneously satisfies optical performance and environmental resistance.
We provide solutions optimized to customer requirements from AR/HR/Beam Splitter coatings to special DLC and space low-reflection coatings.

Coating Technology

01
Antireflection Coating
  • Average Reflectance of 0.5% @ 420 nm ~ 680 nm
  • AR Coating Reflectance of 0.01% @ 1064 nm, 1550 nm
  • AR Coating Reflectance of 0.25% @ 193 nm, 248 nm, 308 nm
02
Dichroic Mirror
  • Reflection of 99.96% @ 1064 nm
  • Reflection of 99.5% @ 248 nm, 308 nm, 355 nm, 532 nm, 633 nm
03
Dichroic Filter
  • Long Pass Filter Type Dichroic Filter
  • Short Pass Filter Type Dichroic Filter
  • Band Pass Filter Type Dichroic Filter
04
Band Pass Filter
  • Narrow Band Pass Filter with a half value of 7 nm (365 nm)
  • Visible wide Band pass Filter
  • Near infrared wide Band Pass Filter
05
Infrared Antireflection
  • Average Reflectance of 0.5% @ 3 um ~ 5 um
  • Average Reflectance of 1.0% @ 8 um ~ 12 um
06
Beam Splitter
  • Reflects 70% and Transmits 30% ± 3% AOI 45 @ VIS Plate & Qube Types
  • Reflects 30% and Transmits 70% ± 3% AOI 45 @ VIS Plate & Qube Types
  • Reflects 50% and Transmits 50% ± 3% AOI 45 @ VIS Plate & Qube Types
  • Reflects Avg 80% AOI 45 @ 550 ~ 900 nm &Transmits Avg 90% AOI 45 @ 3.6 ~ 4.9 um QubeTypes
07
ND Filter
  • Transmittance in the visible light range of 10%, 30%. or 90%
08
ND Metal Film Coating
  • Gold Mirrors have 96% @ 500-800 nm Reflectivity
  • Silver Mirrors have 98% @ 500-800 nm Reflectivity
  • AL Coating. eflectivity of about 85% in visible light and about 90% in infrared regions
01
Coating Film Density Enhancement Technology – Establishing coating film enhancement conditions through IAD (RF Source)
RF Coating Equipment Configuration and 3200 mm Equipment
Before and After Density Improvement Following TEM Analysis
Transmittance Changes Before and After Thermal Shock
  • Applied to mirror coating, ELA large optical components, and HIGH POWER laser application product coatings
02
Uniformity Securing Technology - Implementing uniform coating for large products using specimens and masks

Spectral measurement data for symmetry and uniformity of 25 specimens and product positions

  • Applied to large window and mirror products over 500 mm
03
Special Material Coating Technology - Securing IRG (chalcogenide) coating technology that can replace Ge materials

IRG material spectral characteristics and post-coating 3 ~ 5 μm spectral characteristic graphs

  • Applied to SWIR, MWIR, and LWIR optical systems as a Ge replacement in IR optical systems
04
Possessing coating technology with low absorption, low scattering within 250 ppm (0.025%), and high reflection (maximum 99.99% or higher) required for ring laser gyroscopes

Ring laser gyroscope transmittance and low scattering measurement values

Transmittance (S-wave) Target (ppm) After Coating (ppm) After Annealing (ppm) Result
Plane Mirror 1 150 ~ 250 221 172 4.50
Plane Mirror 2 214 172
Coating Room Clean Room (Class 1000 / Class 100)
IBS Coating Equipment